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Bone. 2019 Apr;121:255-258. doi: 10.1016/j.bone.2019.02.006. Epub 2019 Feb 6.

Senescent and apoptotic osteocytes and aging: Exercise to the rescue?

Author information

1
Department of Medicine, Division of Endocrinology, Metabolism, and Diabetes, University of Colorado Anschutz Medical Campus, Aurora, CO, United States of America. Electronic address: Vanessa.sherk@ucdenver.edu.
2
Tufts University School of Medicine, Maine Medical Center Research Institute Scarborough, ME, United States of America.

Abstract

Osteocytes are the most prevalent cell in the skeleton and are the master regulator of bone remodeling. Despite the understanding that osteocytes have a multiyear lifespan, and some factors induce apoptosis in osteocytes, much less is understood about the induction and consequences of osteocyte senescence. Filling these gaps in knowledge will provide novel approaches to slowing age-related bone loss and preventing fragility fractures. The purpose of this review is to examine the roles of senescence and apoptosis in osteocytes in age-related bone loss. Based on evidence that exercise can prevent senescence in skeletal muscle, we provide a novel hypothesis by which exercise can prolong skeletal health.

KEYWORDS:

Fat oxidation; Mechanical loading; Mitochondria; Osteocyte; Senescence

PMID:
30735796
PMCID:
PMC6459182
[Available on 2020-04-01]
DOI:
10.1016/j.bone.2019.02.006

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